[codex] Avoid schedule tick router refreshes

[jjoonleo]

Summary

• Remove raw ScheduleBloc.stream from the app-level GoRouter.refreshListenable.
• Keep router refreshes tied to auth, notification gate, and alarm gate state changes.
• Add a focused regression test proving schedule progress events do not notify the router refresh listenable while route gate events still do.

Root Cause

GoRouter.refreshListenable subscribed directly to ScheduleBloc.stream, so every per-second ScheduleTick during active preparation could trigger global redirect evaluation even though global redirects do not read schedule progress.

Closes #524.

Validation

• flutter test test/presentation/shared/router/go_router_redirect_test.dart
• flutter analyze
• flutter test